Rich Text Box in a windows form

Question

I'm using the Rich Text Box in a Windows app, and I have been asked if we can add a font size of 8.5 to all fonts. Is this possible? I could not find anything about adding a custom size of 8.5, so before I tell the user that this is not possible I wanted to post the question.

If this is possible to do, please let me know how to add the code. (C#).

Thanks in advance

Dan Plocica

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Dan1104

Answer 1

You can set the RichTextBox's SelectionFont and SelectionColor in the code to change its font, e.g:

 public Form1()
        {
            InitializeComponent();
            
            richTextBox1.SelectionFont = new Font("Tahoma", 25, FontStyle.Bold);
            richTextBox1.SelectionColor = System.Drawing.Color.Red;
 }

Answer 2

Thanks for the response, but I need to be able to add 8.5 as the font size. When I try your suggestion I get build errors. I even tried:

richTextBox1.SelectionFont = new Font("Tahoma", (float)8.5, FontStyle.Regular);

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Dan1104

Answer 3

Thanks for the response, but I need to be able to add 8.5 as the font size. When I try your suggestion I get build errors. I even tried:

richTextBox1.SelectionFont = new Font("Tahoma", (float)8.5, FontStyle.Regular);

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Dan1104

Try this:

richTextBox1.SelectionFont = new Font("Tahoma", 8.5f, FontStyle.Regular);

The above to Windows Forms only. If you are developing a WPF application, you could add a Run element to the FlowDocument and set its FontSize property:

        <RichTextBox x:Name="richTextBox1">
            <FlowDocument>
                <Paragraph>
                    <Run FontSize="8.5" FontFamily="Tahoma" Text=""/>
                </Paragraph>
            </FlowDocument>
        </RichTextBox>

Answer 4

Thanks, but that didn't work, no build errors. It looks like the control doesn't accept half size font sizes.

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Dan1104